Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5603758 | Composition useful for lightweight roof tiles and method of producing said composition | Walter Arthur Schreifels, Alfonso V. Alvarez, Joseph Edward Smith | 1997-02-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5603758 | Composition useful for lightweight roof tiles and method of producing said composition | Walter Arthur Schreifels, Alfonso V. Alvarez, Joseph Edward Smith | 1997-02-18 |